Finn Wallace, London's most powerful criminal, is dead - and nobody knows who ordered the hit.

The taps are off for all gangs in London except Asif Afridi, so frustrated Kurdish gang leader Lale decides to hit a shipment of his cows that are being used to smuggle heroin. Elliot makes a connection with a key member of the Dumani family. Sean unleashes his fury after he makes a discovery about his father’s murder.

Lale is asked to make an impossible decision. Will she choose her homeland or her family? Sean enacts a dangerous plan. Elliot takes on a new foe. Ed is confronted with shocking evidence of Finn’s deal with Luan.

Elliot's loyalty is tested by an increasingly suspicious Ed Dumani. Sean throws a dinner in an attempt to unite the two families. Alexander is asked to meet with some of Finn’s old contacts.

Hidden safely away in a farmhouse in the middle of nowhere, Darren wrestles with the chaos he has unleashed. But when a mysterious group of mercenaries set their sights upon him, will Kinney be able to get there in time to prevent bloodshed?